@mixin badge() {
  display: inline-block;
  padding: 0.35em 0.65em;
  font-size: 0.75em;
  font-weight: 700;
  line-height: 1;
  vertical-align: baseline;
  color: #fff;
  text-align: center;
  white-space: nowrap;
  background-color: #757575;
  border-radius: 0.5em;
}
